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    WATER CO-CATALYST FOR POLYIMIDE PROCESS
    2.
    发明申请
    WATER CO-CATALYST FOR POLYIMIDE PROCESS 审中-公开

    公开(公告)号：WO2022125839A1

    公开(公告)日：2022-06-16

    申请号：PCT/US2021/062710

    申请日：2021-12-09

    Applicant: ASPEN AEROGELS, INC. [US]/[US]

    Inventor： BEGAG, Redouane ,  TRIFU, Roxana ,  ZAFIROPOULOS, Nicholas A. ,  MILLER, Harris R. ,  GOULD, George L. ,  LEVENTIS, Nicholas

    IPC: C08J9/28 ,  C01B32/00 ,  C08L79/08

    Abstract: The present disclosure is directed to methods of forming polyimide gels. The methods generally include forming a polyamic acid and dehydrating the polyamic acid with a dehydrating agent in the presence of water. The resulting polyimide gels may be converted to polyimide or carbon xerogels or aerogels. The methods are advantageous in providing rapid or even instantaneous gelation, which may be particularly useful in formation of beads comprising the polyimide gels. Polyimide or carbon gel materials prepared according to the disclosed method are suitable for use in environments containing electrochemical reactions, for example as an electrode material within a lithium-ion battery.

    POLYIMIDE AEROGELS, CARBON AEROGELS, AND METAL CARBIDE AEROGELS AND METHODS OF MAKING SAME
    7.
    发明申请
    POLYIMIDE AEROGELS, CARBON AEROGELS, AND METAL CARBIDE AEROGELS AND METHODS OF MAKING SAME 审中-公开
    聚酰亚胺，碳黑，金属碳化物及其制备方法

    公开(公告)号：WO2004009673A1

    公开(公告)日：2004-01-29

    申请号：PCT/US2003/023188

    申请日：2003-07-22

    Applicant: ASPEN AEROGELS, INC. ,  WENDALL, Rhine ,  WANG, Jing ,  BEGAG, Redouane

    Inventor： WENDALL, Rhine ,  WANG, Jing ,  BEGAG, Redouane

    IPC: C08G73/10

    CPC classification number: C08J9/28 ,  B01J13/0091 ,  C08G73/10 ,  C08G73/1028 ,  C08G73/106 ,  C08J2201/0502 ,  C08J2203/08 ,  C08J2205/026 ,  C08J2379/08 ,  Y10T428/31721

    Abstract: A preparation process of polyimide aerogels that composed of aromatic dianhydrides and aromatic diamines or a combined aromatic and aliphatic diamines is described. Also descried is a process to produce carbon aerogels derived from polyimide aerogel composed of a rigid aromatic diamine and an aromatic dianhydride. Finally, the processes to produce carbon aerogels or xerogel-aerogel hybrid, both of which impregnated with highly dispersed transition metal clusters, and metal carbide aerogels, deriving from the polyimide aerogels composed of a rigid aromatic diamine and an aromatic dianhydride, are described. The polyimide aerogels and the polyimide aerogel derivatives consist of interconnecting mesopores with average pore size at 10 to 30 nm and a mono-dispersed pore size distribution. The gel density could be as low as 0.008 g/cc and accessible surface area as high as1300 m 2 /g.

    Abstract translation: 描述了由芳族二酸酐和芳族二胺或组合的芳族和脂族二胺组成的聚酰亚胺气凝胶的制备方法。 还描述了生产由由刚性芳族二胺和芳族二酐组成的聚酰亚胺气凝胶衍生的碳气凝胶的方法。 最后，描述了从由刚性芳族二胺和芳族二酐组成的聚酰亚胺气凝胶产生的碳气凝胶或干凝胶 - 气凝胶混合物的方法，两者都浸渍有高度分散的过渡金属簇和金属碳化物气凝胶。 聚酰亚胺气凝胶和聚酰亚胺气凝胶衍生物由平均孔径为10至30nm的互连介孔和单分散孔径分布组成。 凝胶密度可低至0.008g / cc，可达表面积高达1300m 2 / g。

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